Well-screen.



H. R. DECKER & R. W. HOUK.

WELL SCREEN.

APPLICATION FILED JUNE 7, 1909.

975,334. Patented Nov. 8, 1910.

AITOR/VEV UNITE STATES PATENT @FFICE.

HARRY R. DECKER, 0F HOUSTON, TEXAS, AND RUSSELL W. HOUK, 0F VINITA,OKLAHOMA.

WELL-SCREEN.

Application filed June 7, 1909.

To all whom it may concern:

Be it known that we, HARRY R. DECKER, a citizen of the United States,residing at Houston, in the county of Harris and State of Texas, andRUssELL WV. HOUK, a citizen of the United States, residing at Vinita,county of Craig, and State of Oklahoma, have invented certain new anduseful Improvements in Well-Screens, of which the following is aspecification.

Our invention relates to new and useful improvements in well screens.

The object of the invention is to provide a screen of the characterdescribed that will readily admit of the passage of liquid into thescreen pipe and at the same time exclude all sand, gravel etc.

To this end, and with the above and other objects in view, our inventionhas particular relation to certain novel features of construction andoperation, an example of which is given in this specification, andillustrated in the accompanying drawings, wherein Figure 1 is a sideelevation of a portion of the strainer, part of the Wire covering beingomitted to show the grooved and perforated pipe beneath. Fig. 2 is atransverse section on the line aa of Fig. 1.

Referring now more particularly to the drawings, wherein like numeralsof reference designate similar parts in each of the figures, the numeral1 refers to the strainer pipe, which is provided with a plurality ofperforations 2, for the passage of the fluid. In practice the pipe isplaced in the well after the manner of the tube of the ordinary oil orwater well and the fluid percolates through the perforations 2 from thesurrounding fluid reservoir.

The perforations 2 are spirally alined with each other, the spiralsrunning both ways around the pipe, as shown in Fig. 1. Theseperforations are connected by grooves 4:, preferably, but notnecessarily, V-shaped. Thus a pipe is provided with one series ofgrooves spiraling therearound, in one direction; and with anotherseries, correspond- Specification of Letters Patent.

Patented Nov. 8, 1910. Serial No. 500,511.

ingly spiraled therearound, in the opposite direction, the grooves beingso spaced as to intersect at the perforations 2. Free passage ways forthe fluid, under the strainer 3 presently to be described, to theperforations 2 are thus provided. Intermediate grooves 4 may also beprovided, if desired.

In order to prevent the inflowing fluid from carrying in dirt, and sand,it is necessary to provide a suitable filtering or strain ing devicewhich will arrest the movement of the sand and foreign matter before itenters the pipe and still will not interfere, to any serious extent,with the passage of fluids, such as oil water or gas. For accomplishingthis purpose we have provided the strainer 3 which consists of a wire,coiled or spiraled around the pipe 1, as shown in Fig.1. The crosssection of this wire is semi-circular, triangular or of any otherdesired contour. This wire is so coiled as to allow suflicient spacebetween the whirls thereof, for the passage of fluid, and is secured, inany suitable manner to the pipe. The terminals of the wire are thensecured to the strainer pipe, in any preferred manner, as by soldering,and the complete screen thus formed.

A well screen constructed in the manner shown and described, will befound to be cheap and easy to make, as well as strong and durable, andat the same time will permit the free passage of fluid into and from thesame.

' What we claim is z- 1. A well screen comprising a body with names tothis specification in the presence of the subscribing witnesses.

HARRY R. DECKER. RUSSELL W. HOUK. Signed by Harry R. Decker in thepresence of WM. A. OATHEY, GLYNN DAVIS. Signed by Russell W. Houk in thepresaround said body not connecting the perfo rations thereof, and astrainer wound around said body.

3. A well screen comprising a body with perforations therein, spirallyalined with I each other around said body, said perforations beingconnected by peripheral grooves, said body also being provided withspiral z grooves intermediate said first mentioned l grooves, and astrainer wire wound around ence of said body. WM. A. GATHEY,

In testlmony whereof We have signed our C. DODSON.

